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/*
* Copyright 1990 Network Computing Devices
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name of Network Computing Devices not be
* used in advertising or publicity pertaining to distribution of the
* software without specific, written prior permission. Network Computing
* Devices makes no representations about the suitability of this software
* for any purpose. It is provided "as is" without express or implied
* warranty.
*
* NETWORK COMPUTING DEVICES DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS,
* IN NO EVENT SHALL NETWORK COMPUTING DEVICES BE LIABLE FOR ANY SPECIAL,
* INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
* OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE
* OR PERFORMANCE OF THIS SOFTWARE.
*
* Author: Dave Lemke, Network Computing Devices, Inc
*/
#ifndef _FSIO_H_
#define _FSIO_H_
#ifdef DEBUG
#define REQUEST_LOG_SIZE 100
#endif
typedef struct _fs_fpe_alternate {
char *name;
Bool subset;
} FSFpeAltRec, *FSFpeAltPtr;
/* Per client access contexts */
typedef struct _fs_client_data {
pointer client;
struct _fs_client_data *next;
XID acid;
int auth_generation;
} FSClientRec, *FSClientPtr;
#define FS_RECONNECT_POLL 1000
#define FS_RECONNECT_WAIT 5000
#define FS_GIVEUP_WAIT 20000
#define FS_REQUEST_TIMEOUT 20000
#define FS_OPEN_TIMEOUT 30000
#define FS_REOPEN_TIMEOUT 10000
#define FS_FLUSH_POLL 1000
typedef struct _fs_buf {
char *buf; /* data */
long size; /* sizeof data */
long insert; /* where to insert new data */
long remove; /* where to remove old data */
} FSBufRec, *FSBufPtr;
#define FS_BUF_INC 1024
#define FS_BUF_MAX 32768
#define FS_PENDING_WRITE 0x01 /* some write data is queued */
#define FS_BROKEN_WRITE 0x02 /* writes are broken */
#define FS_BROKEN_CONNECTION 0x04 /* connection is broken */
#define FS_PENDING_REPLY 0x08 /* waiting for a reply */
#define FS_GIVE_UP 0x10 /* font server declared useless */
#define FS_COMPLETE_REPLY 0x20 /* complete reply ready */
#define FS_RECONNECTING 0x40
#define FS_CONN_UNCONNECTED 0
#define FS_CONN_CONNECTING 1
#define FS_CONN_CONNECTED 2
#define FS_CONN_SENT_PREFIX 3
#define FS_CONN_RECV_INIT 4
#define FS_CONN_SENT_CAT 5
#define FS_CONN_RUNNING 6
/* FS specific font FontPathElement data */
typedef struct _fs_fpe_data {
FSFpePtr next; /* list of all active fs fpes */
FontPathElementPtr fpe; /* Back pointer to FPE */
int fs_fd; /* < 0 when not running */
Bool fs_listening; /* Listening for input */
int fs_conn_state; /* connection state */
int current_seq;
char *servername;
Bool has_catalogues;
int generation;
int numAlts;
int alternate; /* which alternate is in use +1 */
int fsMajorVersion; /* font server major version number */
FSFpeAltPtr alts;
FSClientPtr clients;
XID curacid;
#ifdef DEBUG
int reqindex;
struct {
int opcode;
int sequence;
} reqbuffer[REQUEST_LOG_SIZE];
#endif
FSBufRec outBuf; /* request queue */
FSBufRec inBuf; /* reply queue */
long inNeed; /* amount needed for reply */
CARD32 blockState;
CARD32 blockedReplyTime; /* time to abort blocked read */
CARD32 brokenWriteTime; /* time to retry broken write */
CARD32 blockedConnectTime; /* time to abort blocked connect */
CARD32 brokenConnectionTime; /* time to retry broken connection */
FSBlockDataPtr blockedRequests;
struct _XtransConnInfo *trans_conn; /* transport connection object */
} FSFpeRec;
#define fs_outspace(conn) ((conn)->outBuf.size - (conn)->outBuf.insert)
#define fs_outqueued(conn) ((conn)->outBuf.insert - (conn)->outBuf.remove)
#define fs_inqueued(conn) ((conn)->inBuf.insert - (conn)->inBuf.remove)
#define fs_needsflush(conn) (fs_outqueued(conn) != 0)
#define fs_needsfill(conn) (fs_inqueued(conn) < (conn)->inNeed)
#define fs_needsconnect(conn) ((conn)->fs_fd < 0)
#define fs_data_read(conn) ((conn)->inBuf.insert - (conn)->inBuf.remove)
#define FSIO_READY 1
#define FSIO_BLOCK 0
#define FSIO_ERROR -1
extern Bool _fs_reopen_server ( FSFpePtr conn );
extern int _fs_write ( FSFpePtr conn, const char *data, long size );
extern int _fs_write_pad ( FSFpePtr conn, const char *data, long len );
extern int _fs_wait_for_readable ( FSFpePtr conn, int ms );
extern long _fs_pad_length (long len);
extern void _fs_connection_died ( FSFpePtr conn );
extern int _fs_flush (FSFpePtr conn);
extern void _fs_mark_block (FSFpePtr conn, CARD32 mask);
extern void _fs_unmark_block (FSFpePtr conn, CARD32 mask);
extern void _fs_done_read (FSFpePtr conn, long size);
extern void _fs_io_reinit (FSFpePtr conn);
extern int _fs_start_read (FSFpePtr conn, long size, char **buf);
extern Bool _fs_io_init (FSFpePtr conn);
extern void _fs_io_fini (FSFpePtr conn);
extern int _fs_poll_connect (XtransConnInfo trans_conn, int timeout);
extern XtransConnInfo _fs_connect(char *servername, int *ret);
/* check for both EAGAIN and EWOULDBLOCK, because some supposedly POSIX
* systems are broken and return EWOULDBLOCK when they should return EAGAIN
*/
#ifdef WIN32
#define ETEST() (WSAGetLastError() == WSAEWOULDBLOCK)
#else
#if defined(EAGAIN) && defined(EWOULDBLOCK)
#define ETEST() (errno == EAGAIN || errno == EWOULDBLOCK)
#else
#ifdef EAGAIN
#define ETEST() (errno == EAGAIN)
#else
#define ETEST() (errno == EWOULDBLOCK)
#endif
#endif
#endif
#ifdef WIN32
#define ECHECK(err) (WSAGetLastError() == err)
#define ESET(val) WSASetLastError(val)
#else
#ifdef ISC
#define ECHECK(err) ((errno == err) || ETEST())
#else
#define ECHECK(err) (errno == err)
#endif
#define ESET(val) errno = val
#endif
#endif /* _FSIO_H_ */
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